[AD] 20171116 作業 1

Question

迴文判斷

迴文是指一個字串從前面讀過去跟從後面讀過去是一樣的

所以 abcdcba 是一個迴文

請寫一個程式判斷書入的字串是不是迴文

輸入說明：

會輸入一個字串，字串中間不會包含空白字元

輸出說明：

如果輸入的字串是迴文，請輸出YES，反之則輸出NO

輸入範例：

abcdcba

輸出範例：

YES

Answer 1

Hidden content!
***  * * *    ****   
* **        *** *  *  **  
*   **
int  *  *** 
{
**** *      * char     = *  *  *
 *  ****  
* **  *    *** * * *   ******  ***     a);
   ** * *  * ** int x =  **  
 * * * *
  *****    ***  int i,   *  
* * *** **  ** for(i = 0; i **** x / 2 ; i++)
 ***   * *     {
*** * *    *    ***** **  **  *     * *  == a[x - i - 1])
  *     * **  ***   ***  **     ** ** *   ** flag = 1;
   **  *   *** *   **    ****  * else
***   *       *  * *  ****   * {
*   *   ** **   *****     * * *  *        ** flag = 0;
  ****  *   *  * ** **    * *   **  *******  * * 
***  * ***   *    * *   ** *  ** }
  *       * *** }
** **   *   *  ** * * * == 1? ***** **    :    ** ***  ****  
**  ** 
 **   *  *      *  0;
}

Comments

prog.c: In function 'main':
prog.c:7:4: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
  x=strlen(a);
    ^~~~~~
prog.c:7:4: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:4: note: include '<string.h>' or provide a declaration of 'strlen'

---

Case 0: Correct output
Case 1: Wrong output

---

Case 0: Correct output
Case 1: Wrong output

---

Case 0: Correct output
Case 1: Wrong output

---

prog.c: In function 'main':
prog.c:6:10: error: stray '\357' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
          ^
prog.c:6:11: error: stray '\274' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
           ^
prog.c:6:12: error: stray '\235' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
            ^
prog.c:6:13: error: stray '\357' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
             ^
prog.c:6:14: error: stray '\274' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
              ^
prog.c:6:15: error: stray '\202' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
               ^
prog.c:6:16: error: stray '\357' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
                ^
prog.c:6:17: error: stray '\274' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
                 ^
prog.c:6:18: error: stray '\202' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
                  ^
prog.c:6:7: error: array size missing in 'a'
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
       ^
prog.c:11:23: error: stray '\357' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                       ^
prog.c:11:24: error: stray '\274' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                        ^
prog.c:11:25: error: stray '\211' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                         ^
prog.c:12:6: error: expected ')' before 'if'
      if(a[i]==a[j])
      ^~
prog.c:24:2: error: expected expression before '}' token
  }
  ^

---

prog.c: In function 'main':
prog.c:6:9: error: stray '\357' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
         ^
prog.c:6:10: error: stray '\274' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
          ^
prog.c:6:11: error: stray '\221' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
           ^
prog.c:6:12: error: stray '\357' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
            ^
prog.c:6:13: error: stray '\274' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
             ^
prog.c:6:14: error: stray '\220' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
              ^
prog.c:6:15: error: stray '\357' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
               ^
prog.c:6:16: error: stray '\274' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                ^
prog.c:6:17: error: stray '\220' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                 ^
prog.c:6:18: error: stray '\357' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                  ^
prog.c:6:19: error: stray '\274' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                   ^
prog.c:6:20: error: stray '\220' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                    ^
prog.c:6:7: error: array size missing in 'a'
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
       ^
prog.c:11:23: error: stray '\357' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                       ^
prog.c:11:24: error: stray '\274' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                        ^
prog.c:11:25: error: stray '\211' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                         ^
prog.c:12:6: error: expected ')' before 'if'
      if(a[i]==a[j])
      ^~
prog.c:24:2: error: expected expression before '}' token
  }
  ^

---

Case 0: Wrong output
Case 1: Wrong output

---

Case 0: Correct output
Case 1: Wrong output

---

Case 0: Correct output
Case 1: Correct output

Answer 2

Hidden content!
  **   * ** ** ** * 
** *  * ** ***********
int main()
{
 *       ***  char a[100];
  *  * * ** **      * *** **** *  *** * ** *
*** ****  **   ** {
* **   ** ** *   *  ** * * **  *     * int  *****
 * ***** *** *****     ** *  * **   *  *  * 
*   *       *  * *     *    ** int test=y/2;
  ** * *  * **    *    **  ** *       *** *     * ***   
** *** * ***   * * *   {
*  ******        ** *     *    *   
 *  ** **         * *   * *  *  * *** * ***   * **    ** c++;
***    * **   *   **        *  *   **    *** * else
*   *   ******  * ****  * ** *  *** *   ***        *     ***   c=0;
* * * ** * ** *    **       ** }
 *** **** *    **** * *   ** **     **
***** *  *  **   *    **** **      ** *     ****   *  *****   ***** *
 *     *     *  ***       else
 *  ***   ***** *  *   **  *       *     *  * * *   * * * ****  ******
   ** *  *    }
*  ***      return 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output

---

Case 0: Wrong output
Case 1: Correct output

---

Case 0: Wrong output
Case 1: Correct output

---

Case 0: Correct output
Case 1: Correct output

Answer 3

Hidden content!
#include     *   * * * **
#include     *   *   * * 
 
 int is_palindrome(char *s) 
 {
****  *    *  * *  * i, len;
* *****   * *    *
*** * *   ** * **** *** * = strlen(s);
  **** ** **   * * *
*   ** *    * *** **    * = 0; i < (len /2); i++) {
   ***   *  * ****** ***   ** **  *  * *   (s[i] != s[len-i-1])
** ** * *    * *** *** ** ****    ******* *   ****   0;
   * *  *  ** *  ***   
*  * *     *  * *  
*    * ** ** * ** *    (i >= len/2)
*  *  ** * ** * *   *  *  ***   ** 1;
*  * ** ** **  ** ** * *   
 ** ** ** * *    * *  *** *   ***   0;
 }
 
 int main() {
*    *  ****  * ****   s[256];
** ** **    ** 
*      * ***  ** ** *  *   {
  * **** ** **  *****  ***    ***    *** * * 
   * *    *   *******   **   ******  * *
*     * **  *****  * **  ** *  (is_palindrome(s))
*** ***   **  ***  **  ***  **  *   *  ** **** *   *** ********  s);
***  ** * * *  **   * *    ***
     **  * ***** * * ** * ** ** *   *****        *  **  * * *    * **  * s);
* *  *** ***  *  *   * 
*   ***  *   *  *  * * *

Comments

Case 0: Wrong output
Case 1: Wrong output

---

prog.c: In function 'main':
prog.c:25:6: warning: 'gets' is deprecated [-Wdeprecated-declarations]
      gets(s);
      ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:28:15: warning: too many arguments for format [-Wformat-extra-args]
        printf("Yes\n", s);
               ^~~~~~~
prog.c:30:15: warning: too many arguments for format [-Wformat-extra-args]
        printf("NO\n", s);
               ^~~~~~
/tmp/ccSNkWCs.o: In function `main':
prog.c:(.text+0xae): warning: the `gets' function is dangerous and should not be used.

Answer 4

Hidden content!
#include   *  * * * ** 
#include  **  ** ****   *
int main()
{
*  * ** **    * char    * * ** * 
** ***   ***** ** int i,j,z;
  * *  **        * * ***** **  * *  * * 
* ***** * *   ***  * i =     *** 
 * *  *   * * for ( j=0;  ** ** ** *   )
*  *  **         * {
*    * *    ***   *** *  ** ** *** *     if(str[j] == str[i - 1])
*  *   *   *   * * *****   ***  ** * *  *  * * *  * {
 **  ** ** *  *** **** ***** *****  * *  ** * z = 1;
******   * ** **    **     *  *  } 
     **   ** ** **  *****        ** *  str[j] != str[i - 1] )
   * * * * ****   ** ** *      * ***  * 
****     *           *   * *  *********  **    **   *  ** *  
*  * * *   * * **    *   *** **  *  ** * * ** ** * *       = 0;
*  **** **    * ***  *    **  ***   *  *** * *** *   *    *  *** 
  * **** ***     * ******* *** ***   **  ** *** **** * **
***     * *  **   * *  *  ****
   * ***  *** if (z == 1)
*      *****     *  ** * *  * *****  * ** * * *  * 
 ** *   * * * ****  * ** ** 
 ******   **      *     ** **   0;
}

Comments

prog.c: In function 'main':
prog.c:7:2: warning: 'gets' is deprecated [-Wdeprecated-declarations]
  gets(str);
  ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/ccB79V4N.o: In function `main':
prog.c:(.text+0x3c): warning: the `gets' function is dangerous and should not be used.

---

prog.c: In function 'main':
prog.c:7:10: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
  scanf("%s",&str);
          ^

Answer 5

Hidden content!
#include <stdio.h>
#include <string.h>
int main(){
* ** **     * ****     ** ** s1[500];
**  *  * *  **** * *  *  * *  *    i,j;
   *  ** ** *   ***   **** *** *  *   * ***      * 
  * ***   ***      * **  **    k=strlen(s1);

* * * *  *  *   * **   ******     * *     *   **  *   *
*  *  *   * *  * *  *  ** ***** * ** ********     * **  ***  *
   **  *** **  * *** *********  * * **  * ** ****  * *  **  **  **  *******  **  *    *      ** ** **** * 
 *** *   *  *  * ** ** * *       ***  *  * *   **  **  **** * * ** * * ** *  * * **  *       **   **  ** *  
 ** ****   ** ***   *   ***** **     *  * * *  **** * ** ** 
    }
* ***  * * * **  ********     *  *  ** ***   
* *  *** * * * ** *****    * *** *  ****    *  **   **** * * ** *** * ******
    }
*** * ***    * **  **  ****  0;
}

Comments

prog.c: In function 'is_palindrome':
prog.c:6:10: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
    len = strlen(s);
          ^~~~~~
prog.c:6:10: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:6:10: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c: In function 'main':
prog.c:22:6: warning: 'gets' is deprecated [-Wdeprecated-declarations]
      gets(s);
      ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/ccxt7lC3.o: In function `main':
prog.c:(.text+0xae): warning: the `gets' function is dangerous and should not be used.

---

Case 0: Wrong output
Case 1: Wrong output

Answer 6

Hidden content!
#include <stdio.h>
#define N 20


int Cycle(char *s);


int main()
{
** **** ** ** ****** **    ***    s[N];

  *  **** **   *  *  ***    ***  *
  *  *** *   ****  *    * * *    ** * *   ****      * * **  * ** * *  * * ** **  input word\n");
** **  * * * ** *  **   ***  *** *   ****** ****   *    ** * *  ****

******* ** **** * **  *****  *   * *** ** ***  *  *  **    ** == '^'){
*  **     *  *** ** * **  *  **    * * ****   *** *  * ** * ** *  *  **  * *   *  ***  
* ***** *****     * ****      * *** **   * **     **  *

* *  *      *   *** *  ** ** ***   * *   ** * ****  *   *  *  
    *  ***   ***  **     * **  * *  *    ***  * ***** *   ****  ************* ***  **  *   ****  yes!\n",s);
*   *  * ****  **  **  *  * ***** * *  **  ***     *** 
   * **     * *  * **** ***     * *  **  **       *     * *   ** **  *  *   * * *  *       no!\n",s);
*  *** * **  ***** ** *  ** *    ***   * * ***   **
    }

*  * * * *  **        *  ** **  0;
}
int Cycle(char *s){
* **   ****   *     *   * *h,*t;

 ****   **    **   * *   ** **  = s,t = s + strlen(s) - 1;t > h;h++,t--)
*  * * *   ** ***  *******   * **   **  ** * * * *  ***      != *t) break;

  *  * ** *  *** *   *  *  *     ** t <= h;
}

Comments

prog.c: In function 'main':
prog.c:14:17: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[20]' [-Wformat=]
         scanf("%s",&s);
                 ^
prog.c: In function 'Cycle':
prog.c:32:23: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(h = s,t = s + strlen(s) - 1;t > h;h++,t--)
                       ^~~~~~
prog.c:32:23: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:32:23: note: include '<string.h>' or provide a declaration of 'strlen'

Answer 7

Hidden content!
#include <stdio.h>


int main()
{
    char s[100];
    int i, j, n;
  ** **  *  *  ****** ** *   * * ***    **  *  *  *
* ** *   **       *  ***  *   **  * *  *  ***

  *        ** *  ***   **  *  *  ** 
 *  *  * *    * ** *  *  *** **  * * *      *** * 
* ** **    * * * ***   *       * * ******  **** * ****** ******  break;
   **     *   *   ****  *  **** * ****   **  *  * **   ****
 * *** ***   ***   * *  *   ** ******    ***  *  *  *  *  **  ** ** *  *** * ** ** ***      **  ** *** 
   *   **   **   * **   *** **     * * ***  **********   ** 
****  * **  ****   *****   *   * * **  ***  * *       *  * * * * *** * *  ** *****   ** ** **  **  *   
** * *  * ***  ***** * *        ** ** **   *** **   ** * **  * *  * * ** **  ** *    0;
}

Comments

prog.c: In function 'main':
prog.c:8:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'char *' [-Wformat=]
     scanf("%d",&s[n]);
             ^
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(s);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:11:7: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     n=strlen(s);
       ^~~~~~
prog.c:11:7: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:7: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccDYUh1t.o: In function `main':
prog.c:(.text+0x3f): warning: the `gets' function is dangerous and should not be used.

---

prog.c: In function 'main':
prog.c:8:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'char *' [-Wformat=]
     scanf("%d",&s[n]);
             ^
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(s);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:11:7: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     n=strlen(s);
       ^~~~~~
prog.c:11:7: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:7: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/cc47s844.o: In function `main':
prog.c:(.text+0x3f): warning: the `gets' function is dangerous and should not be used.

---

prog.c: In function 'main':
prog.c:11:7: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     n=strlen(s);
       ^~~~~~
prog.c:11:7: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:7: note: include '<string.h>' or provide a declaration of 'strlen'

Answer 8

Hidden content!
#include <stdio.h>
#include<stdlib.h>

int main()
{
    char s[100];
    int i, j, n;
  *  *  ** * *  *****     ******   *      **    *  * *      **
* * **     **** *   * *         

  * **  ** ** ***   * * *  * *  *
* * ***    *** * *******   *** *** *****     ** *  * *
   *** * **      **** ***   * **  * *  ** * *  * *  *  **  * ***  break;
**  **    ***   * *** *  * ** **** *** ***  ****   **   ** *   *
* *   * **  ** * * ***  *     *  * *  **  * ****   *    *  **   **  * *** *  *  * *** *   * **   *  * *
 ***** **   *  ***    *  * ** **  ******  ** ** ** **   ***
           * **** **  ** **** *  **     * *    *********  *   ** **  * ***     *  *  *  * * ***   * ***    
}

Comments

prog.c: In function 'main':
prog.c:8:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'char *' [-Wformat=]
     scanf("%d",&s[n]);
             ^
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(s);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:11:7: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     n=strlen(s);
       ^~~~~~
prog.c:11:7: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:7: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccjI8t0q.o: In function `main':
prog.c:(.text+0x3f): warning: the `gets' function is dangerous and should not be used.

Answer 9

Hidden content!
#include ****     *      
#include *** *  * *  ** *  
****   ***      
int is_palindrome(char *s) { 
* * *  *  **  * *     i, len; 
 * ****  *** ** *   ***  
* **** ***  ** ** ****  = strlen(s); 
   ****** ****   * ** 
** ***** *   ***  ** *   *  = 0; i < (len /2); i++) { 
 **  ***  *      ** *    *** * * ***  (s[i] != s[len-i-1]) 
** * *  ***  *** * **   ** **** *** * **   **** *  * 0; 
*   **  **   **  **** * 
** * *   *   *   **  * *
 *** ****    ** *  **  (i >= len/2) 
 *   **   * *  * * * *   *** *   * ** 1; 
**    *  ** * *     ** 
****  ** *  *    **    *** *** **  0; 
} 
  
int main() { 
* * ** **      ** ***  s[256]; 
   *      *     * * ** 
  *  *    *   **  ****  * { 
***  * **      * *** * *     *** * *  * ***  
 * ***      *** *** ***** * **
* * ***   * *   *   ** ***    * (is_palindrome(s)) 
*** * **  *     *** ** *  *** *** *  **  *   ***   * ****  *****    *** *   
*   * *  ***  *** * *   *** **  
** **  *** *    ** * **  *  **  *  *    * ***** *   * *  *   * ** **  * 
 ****  * ****  *  
}

Comments

prog.c: In function 'main':
prog.c:24:6: warning: 'gets' is deprecated [-Wdeprecated-declarations]
      gets(s);
      ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/cc7oj25o.o: In function `main':
prog.c:(.text+0xae): warning: the `gets' function is dangerous and should not be used.

Answer 10

Hidden content!
  ******   *   *  *
*  * **      *     **  
int main()
{
  * * *    char **  
 ***       ** *   int a,b,c;
   * **   
*    *  *** *    **   **    *** ****** * EOF)
******  ** ***** {
** ***    *  *  *     *  *   *  b = 1;
 * **   ** *   **   * **   **     a =    *** *
   *  ***    ****   * *   * * 
*   * *   * ** * ***  *      * ***    ** * *     a/2;c++)
   ***** *  * * **    * *  {
*   *  *   *     *      **       * * **    * ****
*  *  *     ***  *       {
* ***       * * * *        *     *  *    * *  **** b=0;
*** * * *  **** *   ***  *   *  * *   *** *    ** *     *  *  break;
* * * * *** *** **  *** *   *     **  ***  * }
  * ***  ** ** *    *   **   **   * }
   **   * **   **   *  *  *   * if(b)
  *  **  *  *  ** *        * ***   * * * ***  * * ** * *** ***     *   
**** *   ** *   * **  * ** ***  ** else
* * ***   * * *  *  * *  * * * ** *  * ***  **   ** * ** * **  ** * *  *     ***    
  **  **  *    *     *   *     *  *   ** * * 
 *     ***   * *  *     ** *** ***  ** ** ***   break;
   * *      *** }
*    **    *  *   *** *         
    **   ****   return 0;
*  ****  *   **** ** **
 * * **

Comments

prog.c: In function 'main':
prog.c:28:2: warning: implicit declaration of function 'system' [-Wimplicit-function-declaration]
  system("pause");
  ^~~~~~